diff --git a/homeassistant/components/mqtt/vacuum/__init__.py b/homeassistant/components/mqtt/vacuum/__init__.py
index 366a7dca159..86d94883c90 100644
--- a/homeassistant/components/mqtt/vacuum/__init__.py
+++ b/homeassistant/components/mqtt/vacuum/__init__.py
@@ -15,13 +15,11 @@ from ..mixins import async_setup_entry_helper, warn_for_legacy_schema
 from .schema import CONF_SCHEMA, LEGACY, MQTT_VACUUM_SCHEMA, STATE
 from .schema_legacy import (
     DISCOVERY_SCHEMA_LEGACY,
-    PLATFORM_SCHEMA_LEGACY,
     PLATFORM_SCHEMA_LEGACY_MODERN,
     async_setup_entity_legacy,
 )
 from .schema_state import (
     DISCOVERY_SCHEMA_STATE,
-    PLATFORM_SCHEMA_STATE,
     PLATFORM_SCHEMA_STATE_MODERN,
     async_setup_entity_state,
 )
@@ -34,15 +32,6 @@ def validate_mqtt_vacuum_discovery(config_value: ConfigType) -> ConfigType:
     return config
 
 
-# Configuring MQTT Vacuums under the vacuum platform key was deprecated in
-# HA Core 2022.6
-def validate_mqtt_vacuum(config_value: ConfigType) -> ConfigType:
-    """Validate MQTT vacuum schema (deprecated)."""
-    schemas = {LEGACY: PLATFORM_SCHEMA_LEGACY, STATE: PLATFORM_SCHEMA_STATE}
-    config: ConfigType = schemas[config_value[CONF_SCHEMA]](config_value)
-    return config
-
-
 def validate_mqtt_vacuum_modern(config_value: ConfigType) -> ConfigType:
     """Validate MQTT vacuum modern schema."""
     schemas = {
diff --git a/homeassistant/components/mqtt/vacuum/schema_legacy.py b/homeassistant/components/mqtt/vacuum/schema_legacy.py
index 39b734235a0..8a2912f1910 100644
--- a/homeassistant/components/mqtt/vacuum/schema_legacy.py
+++ b/homeassistant/components/mqtt/vacuum/schema_legacy.py
@@ -161,9 +161,9 @@ PLATFORM_SCHEMA_LEGACY_MODERN = (
 )
 
 # Configuring MQTT Vacuums under the vacuum platform key was deprecated in
-# HA Core 2022.6
+# HA Core 2022.6;
+# Setup for the legacy YAML format was removed in HA Core 2022.12
 PLATFORM_SCHEMA_LEGACY = vol.All(
-    cv.PLATFORM_SCHEMA.extend(PLATFORM_SCHEMA_LEGACY_MODERN.schema),
     warn_for_legacy_schema(VACUUM_DOMAIN),
 )
 
diff --git a/homeassistant/components/mqtt/vacuum/schema_state.py b/homeassistant/components/mqtt/vacuum/schema_state.py
index 3a5d267a5d4..eed8d98bd34 100644
--- a/homeassistant/components/mqtt/vacuum/schema_state.py
+++ b/homeassistant/components/mqtt/vacuum/schema_state.py
@@ -155,9 +155,9 @@ PLATFORM_SCHEMA_STATE_MODERN = (
 )
 
 # Configuring MQTT Vacuums under the vacuum platform key was deprecated in
-# HA Core 2022.6
+# HA Core 2022.6;
+# Setup for the legacy YAML format was removed in HA Core 2022.12
 PLATFORM_SCHEMA_STATE = vol.All(
-    cv.PLATFORM_SCHEMA.extend(PLATFORM_SCHEMA_STATE_MODERN.schema),
     warn_for_legacy_schema(VACUUM_DOMAIN),
 )